The Underwater Project by Mark Tipple

Striving for dramatic shots, Mark has to hold his breath for up to a minute as
he waits for the perfect moment. He said: "As the wave approaches I try to
be on the ocean floor a few seconds before the swimmers dive under, so I'm
underwater before they dive below. The camera I use shoots close to around
eight frames per second, which helps to capture the people's expressions and
subtle changes in body positions. The camera is kept dry using an underwater
housing, which is really light and super strong. Most importantly its size
doesn't become a hindrance when I'm swimming to get into position - or to
get out of danger fast."